Home / 384,634.04-530,686.89-221,282

Finding the Fourth Proportional to 384,634.04, 530,686.89 and 221,282

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Solution

The fourth proportional to 384,634.04, 530,686.89 and 221,282 is: 305,306.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,634.04 : 530,686.89 = 221,282 : x
  2. Step 2: Convert to fraction form
    384,634.04/530,686.89 = 221,282/x
  3. Step 3: Cross multiply
    384,634.04x = 530,686.89 × 221,282
  4. Step 4: Simplify right side
    384,634.04x = 117,431,456,392.98
  5. Step 5: Solve for x
    x = 117,431,456,392.98/384,634.04
  6. Step 6: Final answer
    x = 305,306.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.